None of the processes are ready to run.

I am executing a geoprocessing service and result map service. With the same inputs, sometimes it works, sometimes it fails with the following message ???<MessageDesc>None of the processes are ready to run.</MessageDesc>.???

I did solve my problem. The error message "none of the processes are ready to run" occurs when an input to the geoprocess is not available.

In my case the input in question were various databases. Local databases worked but databases on a network drive didn�??t work because the geoprocess didn�??t have permissions to access the network drive.

I could access the network drive while running the tool in ArcMap because I was logged on as administrator. But the geoprocess runs as ArcGISSOC and I had to create a ArcGISSOC windows account on the file server machine and give this account permissions to the folder.

Both the inputs not ready and the permissions are documented in the Esri pages but only a sentence or two for each in all of their documentation so it is not something you might notice.

In another case, a database was locked by another process. Even with permissions this didn�??t work until the lock was released. In my case, the database was locked due to a different ArcGIS problem which I haven�??t solved yet.

You may not have the exact same problem, but I would guess the message is a result of some input not available.

Let me know if there is anything else I can tell you and / or post your solution here after you figuer it out to help the next person.

Well that's not the exact case for me as the DB is at my local machine...and when i execute the same geo-process over the same data sometimes it works and sometimes not!

the inputs seems to me available as I tested them over ArcMap and they did work...for now im trying to install service pack 2 as it might help...

what is really confusing me is how come that it works over the same data 'sometimes'...I will try to search for a solution and if you got any hint please just drop me a line and for sure I will keep you updated as soon as i get to a solution.